What's in the Box

(8) Forged Flat-Top Pistons

(8) Pro-Stock I-Beam Rods

(1) Series 9000 Cast Crank

(1) Main Bearing Set

(1) Rod Bearing Set

(1) Piston Ring Set

Product Description

Scat Stroker Kit
This rotating assembly will take your mild mannered 302 to a heavier hitting 331 in your 1979-1995 Mustang. A Series 9000 cast steel crankshaft offers a 3.250" stroke & swings a set of bushed 5.4" long Pro-stock I-beam rods featuring ARP 8740 3/8" capscrews. For maximum power and reliability, Scat adds a set of rod and main bearings and tops it off with a set of Forged pistons & rings. These Scat Street Strip rotating assemblies are designed to be used with 28oz. balance Flywheel and Harmonic balancer.

Compression Ratio Calculator:
9.5:1 w/54cc
9.0:1 w/58cc
8.4:1 w/64cc

Note
This kit comes un-balanced and must be balance with your supplied balancer and flywheel/flex-plate.
Flat top pistons have valve reliefs made onto them.

Note
This kit comes un-balanced and must be balance with your supplied balancer and flywheel/flex-plate.

Piston Information
Icon Piston with -11CC Valve Reliefs

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Scat 331 & 347 Stroker Kits
Over the past 50 years, Scat Enterprises has become one of the most respecting, and innovative manufacturing companies in the automotive aftermarket when it comes to stroker kits. Whether it be high horsepower, or stock replacement parts, Scat has you covered. Scat Enterprises offers a wi... more

Product Videos

Mustang Scat 331 & 347 Stroker Kits (79-95)

Mustang Scat 331 & 347 Stroker Kits (79-95)

Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. The best place to go for anything Mustang related!

Published on 2016-06-20Scat 331 Stroker KitThis rotating assembly will take your mild mannered 302 to a heavier hitting 331 in your 1979-1995 Mustang. A Series 9000 cast steel crankshaft offers a 3.250" stroke & swings a set of bushed 5.4" long Pro-stock I-beam rods featuring ARP 8740 3/8" capscrews. For maximum power and reliability, Scat adds a set of rod and main bearings and tops it off with a set of Forged pistons & rings. These Scat Street Strip rotating assemblies are designed to be used with 28oz. balance Flywheel and Harmonic balancer.

Scat 347 Stroker KitLooking to add a Serious Competition Stroker motor under the hood of your 1979-1995 Mustang? These Scat engine rotating assemblies are a perfect basis to build your new power-plant on. This Scat 347 competition rotating assembly features a Scat forged 4340 3.400" stroke Crankshaft & Forged 5.400" H-beam connecting rods, with 7/16" cap screw bolts. For maximum power and reliability, Scat adds a set of rod and main bearings and tops it off with a set of Forged pistons & rings. These Scat competition rotating assemblies are designed to be used with 28oz. balance Flywheel and Harmonic balancer.

About This Brand

Scat enterprises was founding in the early 1960's by Tom Lieb. Since then, Scat has researched and developed aftermarket performance engine parts for a variety of different cars. Ranging from pistons, connecting rods, crankshafts, stroker kits, forged rotating assemblies, and many more engine internal, Scat has set the bar high within the automotive industry. They pride themselves in the high quality products the supply and the excellent customer service they are known for. Shop LatemodelRestoration.com to get your stroker kits and rotating assemblies to get your Mustang putting down serious horsepower.

Testimonials

Featured Ride

I have been restoring my car for a long time. The engine is a 331 stroker afr 185 heads, trick flow r series intake, 1 3/4 in long tubes with flow master dumps. Sounds awesome and love it every ride. ...